Integration of Agronomic Practices with Herbicides for Sustainable Weed Management in Aerobic Rice

Table 4

Weed dry weight and weed density at different growth stages of rice variety AERON 1 as influenced by weed control treatments (averaged over seasons).

Treatment	Weed dry weight (g/m^2)			Weed density (no./m^2)
	10 DAS	30 DAS	75 DAS	10 DAS	30 DAS	75 DAS
T1	2.25^b	61.18^b,c	52.89^b,c	56.48^b	122.74^b,c	124.89^b,c
T2	1.87^b	63.40^b	28.66^e,f	46.83^b	127.04^b	98.66^e,f
T3	2.43^b	10.17^f,g	39.68^d,e	60.77^b	20.38^f	109.68^d,e
T4	2.02^b	11.37^f	11.63^g,j	50.65^b	22.78^f	81.63^g,h
T5	1.80^b	12.22^f	6.77^i,j	44.93^b	24.41^f	76.77^h
T6	6.62^a	47.78^d,e	56.65^b,c	165.40^a	95.45^d,e	126.65^b,c
T7	6.53^a	44.59^d,e	21.87^f,g	163.18^a	89.01^d,e	91.87^f,g
T8	5.95^a	51.20^c,d	11.98^g,j	148.87^a	102.17^d	81.98^g,h
T9	5.92^a	38.73^e	48.72^c,d	148.05^a	77.34^e	118.72^c,d
T10	6.55^a	42.43^de	18.73^f,i	163.45^a	84.94^d,e	88.73^f,h
T11	6.42^a	44.43^d,e	7.87^h,j	160.68^a	88.94^d,e	77.87^h
T12	6.57^a	50.42^d	64.58^b	164.18^a	100.63^d	134.58^b
T13	5.93^a	52.53^c,d	19.37^f,h	148.25^a	104.80^c,d	89.38^f,h
T14	6.47^a	52.62^c,d	10.36^g,j	161.88^a	105.13^c,d	80.36^g,h
T15	0.00^c	00.00^g	00.00^j	00.00^c	00.00^g	00.00^i
T16	6.63^a	105.22^a	328.51^a	165.83^a	209.44^a	299.50^a
LSD	0.74	10.37	12.59	18.36	20.19	13.05

T1: pretilachlor/safener fb bentazon/MCPA; T2: pretilachlor/safener fb manual weeding; T3: pretilachlor/safener fb propanil/thiobencarb; T4: pretilachlor/safener fb propanil/thiobencarb fb bentazon/MCPA; T5: pretilachlor/safener fb propanil/thiobencarb fb manual weeding; T6: propanil/thiobencarb; T7: propanil/thiobencarb fb bentazon/MCPA; T8: propanil/thiobencarb fb manual weeding; T9: cyhalofop-butyl + bensulfuron; T10: cyhalofop-butyl + bensulfuron fb bentazon/MCPA; T11: cyhalofop-butyl + bensulfuron fb manual weeding; T12: bispyribac-sodium; T13: bispyribac-sodium fb bentazon/MCPA; T14: bispyribac-sodium fb manual weeding; T15: season long weed-free by manual weeding; T16: season long weedy. LSD: least significant difference.
Within a column, means sharing same alphabets are not significantly different at P = 0.05 probability level according to the least significant difference (LSD) test.